[mlir][ArmSME] Fix typo (NFC)

Author: MacDue

mlir/include/mlir/Dialect/ArmSME/IR/ArmSMEOps.td

@@ -605,7 +605,7 @@ def InsertTileSliceOp : ArmSME_Op<"insert_tile_slice", [
 ]> {
   let summary = "Insert 1-D scalable vector into slice of 2-D tile";
   let description = [{
-    Inserts a 1-D scalable vector to a slice of a 2-D scalable vector tile at
+    Inserts a 1-D scalable vector into a slice of a 2-D scalable vector tile at
     the given index. The type of the 1-D scalable vector to be inserted must
     match the type of the tile slice. A tile slice is a 1-D vector of
     horizontally or vertically contiguous elements within a ZA tile. The updated